﻿#region Copyright Statement
//  ------------------------------------------------------------------------------
//  
//    This file is part of The Streambolics Library.
//    Copyright © 2005-2010, Stephan Leclercq & Streambolics
//    All rights reserved.
//  
//    The Streambolics Library is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//  
//    The Streambolics Library is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//  
//    You should have received a copy of the GNU General Public License
//    along with Streambolics; if not, write to the Free Software
//    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
//  
//  ------------------------------------------------------------------------------
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Runtime.InteropServices;

namespace Streambolics
{
    public static class DirectoryInfoExtensions
    {
        private static string CombinePaths (DirectoryInfo aBase, params string[] parts)
        {
            string s = aBase == null ? null : aBase.FullName;

            foreach (string p in parts)
            {
                if (!String.IsNullOrEmpty (p))
                {
                    if (s == null)
                    {
                        s = p;
                    }
                    else
                    {
                        s = Path.Combine (s, p);
                    }
                }
            }
            if (s == null)
            {
                return String.Empty;
            }
            else
            {
                return s;
            }
        }

        public static DirectoryInfo CombinePathsToDir (params string[] parts)
        {
            return new DirectoryInfo (CombinePaths (null, parts));
        }

        public static DirectoryInfo Subdirectory (this DirectoryInfo d, params string[] parts)
        {
            return new DirectoryInfo (CombinePaths (d, parts));
        }

        public static FileInfo File (this DirectoryInfo d, string n)
        {
            return new FileInfo (CombinePaths (d, n));
        }

        public static void Create (this DirectoryInfo d)
        {
            Directory.CreateDirectory (d.FullName);
        }
    }
}
